1.2.138. Class Invasion

Class invasion happens when an object access another object’s private methods or properties.

This is possible from the scope of the class itself. For example, an cloned object, or a parameter with the same type as the current class.

Class invasion is a PHP feature. This applies to properties, constants and methods, static or not.

<?php

class x {
     private $p = 1;

     function foo(X $x) {
             // This is the normal access to private properties.
             $this->p = 3;
             // This is class invasion, as $x is a distinct object.
             $x->p = 2;
     }
}

?>

1.2.138.1. Specs

Short name	Classes/ClassInvasion
Rulesets	All, Class Review
Exakat since	2.5.1
PHP Version	All
Severity	Minor
Time To Fix	Quick (30 mins)
Precision	Medium
Features	class-invasion
Available in	Entreprise Edition, Exakat Cloud